Whenever I drive in cold conditions (usually around 11pm when it's starting to get icy) I get a whurring noise coming from under the bonnet. It only happens when I'm accelerating and the engine is cold. Once I put the clutch down it stops, then it stops altogether after about 5 mins once the engine is warm.
I thought it was perhaps the fan belt, but my friend suggested that maybe its the cambelt which is scary coz if that goes then I'm under the impression that the engine is damaged?
Any ideas??
The car is a 1998 Skoda Felicia
get the tensioners and rollers on both the fan belt and timing belt checked. could be one of these has dried up of grease and is causing a dry rubbing sound.
it may also be the connection to your solenoid, or clutch release bearing, or vacum pump, or alternator, or your water pump, or a dodgy ignition coil, or maybe your down pipe or could even be you cant think of any other bits at the moment,
check your drive belts, one is probably hard and glazed, so when the engine is cold it slips round the pulleys, when you press the clutch it takes the pressure off and goes quiet, when the car warms up the belt gets pliable and is able to grip better. definitly not a timing belt fault. no point in trying to tension the drive belt, as now its been slipping it will have got hot and will need changing.